Tooth for excavating shovels



Feb. 24, 1925. I 1,527,189

I V. HONSTAIN TOOTH FOR EXCAVATING SHOVELS Filed Sept. 22, 1924 Zn v'e ntor-x Vernon Hons "ta/n.

f7? ior'neys.

Patented Feb. 24, 1925.

uurrso vsm'rfes VERNON HONSTAIN, OF MINNEAIEOLIS, MINNESOTA.

TOOTH FOR EXCAVATING SHOVELS.

Application filed September 22, 1924. Serial No. 739,045.

My invention relates to teeth for exca-- 10 vating shovels and an object is to provide a tooth consisting of a body member and-fa point, these two parts being so constructed that the point may be readily and securely attached to the body member in reverse polo sition.

The full objects and advantages of my invention will appear in connection with the detailed description thereof and the novel features of my inventive idea will be particularly pointed out in the PlaJIIlS.

In the accompanying drawlngs, wh ch 11- lustrate the application of my invent1on,--

Fig. 1 is'a side elevational view of\the device attached to a wall of an excavating tooth, the shovel being shown partly broken awa and in section. I Fig. 2 1s atop plan view. I Fig. 4 is longitudinal sectional view of the point detached. Fig. 5 is a side elevational view of the forward portion of the body member. Fig. 6 is a plan view of the forward portion ofthe body member. Fig. 7 is a side elevational view of the s1de opposite that shown in Fig. .5. 1 1g 8 IS a view in section on the line 88 of Fig. 1.

As shown in-the drawings a tooth .comprises a body member 10 and ,a detachable reversible point 12. The member 10 on its upper side is provided with a rearwardly inclined lugil adapted to fit over the forward lip or edge of the wall 16. of the shovel and the-upper surface-of the member 10 is shaped to fit the wall 16 to which 7 it is securely fastened by rivets 18. The body member 10 at its forward end is provided with a wedge-shaped nose 20 having upper and lower inclined surfaces, the lug 14 forming a continuation of the upper surface. The two side surfaces of the body member: are parallel and one of them is provided with a' half'round tapered recess 22 and the other' side is provided with a rib 24 which provides, a lockingshoulder.

vention will now be obvious.

ig. 3 is a vertical sectional view.'

The point 12 is wedge-shaped and is provided with a chamber 24. into which the nose 20 fits. point at the rear are provided with half round tapered recesses 26, the taper of one recess being opposite to that of the other. The recesses 26 continue through the upper and lower surfaces of the point to form round openings 28 and 30, the opening 30 being larger than the opening 28 on account of the taper of the recesses. A tapered pin 32 is provided to fit the taperedrecesses 22 and 26 when these recesses register with each other.

The operation and advantages of my in- The inclined lug 14 aids in holding the body member 10 securely on the wall 16 of the shovel. When the point 12 is applied to the nose 20 of the body member the rear edge of the recess 20 on one side of the point slides 'past the,rib 24 and has a locking engagement with the shoulder on the rib, as will be ap- HEISSUED The interior of the side walls of the parent from Fig. 8. The recess 26 onthe other side of the point comes into re ister with the recess 22 and the point is firmly secured by driving the pin 32 into these registered recesses. The force exerted by driving in the pin causes the recess on the other side of the point to be securely locked with the rib 2-1. \Vhen the point 12 becomes worn on its lower side the pin 32 is removed, point 12 is detached and then replaced in reverse position. The provision of the two oppositely-inclined recesses 26 on opposite sides of the point permits this reversal.

I claim:

1. A tooth of the class described comprising a body member havln a wedge-.

shaped nose, a wedge-shaped point containmg a chamber 1nto which said nose 1s adapted to fit, said nose having a rib.

on one of its sides and a recess on its op posite-side, said point. having recesses in its opposite sides adapted for locking engagement with said rib, and also for regising a chamber into which said nose is and a tapered pin adapted to pass through adapted to fit, said nose having a rib on the recesses when registered with each other one of its sides and a tapered recess on its whereby said point ma be reversely at 1 other side, said point having reversely tached to said body mem' r. tapered recesses in its opposite sides adapted In testimony whereof I hereunto afiix for locking engagement with said rib and my signature.

also for registering with said first recess, VERNON HON STAIN. 

